Since the introduction of Bayoxide® E33 to the drinking water markets, Bayoxide® E IN-20 media has been developed for application to other non-drinking water processes for As, PO4 and for heavy metals removal. It has been used for arsenic removal from mining and industrial wastewaters, selenium removal from refinery wastes and for phosphate polishing of treated municipal wastewaters.
Bayoxide® E IN-20 is a granular ferric oxide media developed and produced by Lanxess. This media is similar in its chemistry and functionality to the Bayoxide® E33 developed during the late 1990s to Severn Trent Services’ specifications for application in drinking water Arsenic (As). Ferric ion oxide solids react with arsenic oxyanions to form a tight covalent bond as noted below. Selective for low arsenic levels in the presence of sulfate, carbonate and other oxyanions, granular ferric oxide can adsorb as much as 20g As per kg of dry media.
Bayoxide® E IN-20 is capable of removing over 500 parts per billion (ppb) arsenic from water down to less than 10 parts per billion. In addition to drinking water arsenic Removal, the product also has a high capacity for phosphate (PO4) and selenium (Se) removal. |